Premium
Statisches Verhalten und Dauerfestigkeitsanalyse von vulkanisierten Silikonklebstoffen für Luftfahrtanwendungen bei hohen Temperaturen
Author(s) -
Banea M. D.,
da Silva L. F. M.
Publication year - 2010
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201000605
Subject(s) - adhesive , materials science , composite material , silicone , silicone rubber , lap joint , joint (building) , shear strength (soil) , shear (geology) , structural engineering , layer (electronics) , environmental science , soil science , soil water , engineering
This paper focuses on the mechanical properties of room temperature vulcanising (RTV) silicone adhesives for aerospace applications. In view of the very limited amount of published data on this subject, we analyzed the performances of two RTV silicone rubber adhesives through adhesive joint tests. The standard Thick Adherend Shear Test (TAST) was performed in order to measure the shear properties of the adhesives. Single lap joints (SLJs) were fabricated and tested to assess the adhesive performance in a joint. The influence of temperature on the lap‐shear strength of the adhesives was investigated. It is shown that the lap‐shear strength of both adhesives decreased with increasing of temperature. The effect of bondline thickness and overlap length on the lap‐shear strength of the adhesives was also studied. The reduction of failure load with an increase of the bondline thickness is a very common situation when dealing with structural adhesives. However, for the tested RTV silicone adhesives the failure loads increased as the bondline was made thicker. Also, the failure loads of RTV silicone adhesive joints increased almost proportionally with increasing the overlap length. Fatigue tests were also performed and show a low dispersion of the results.